the upload url should be
http://www.ripthejacker.net/canibus/uploads
the upload path should be
/home/accountname/public_html/canibus/uploads
and using file manager check the permissions for the upload folder,
to insure it is 777
you should see the permission number to the right of the folder name,
when you navagate to the forum folder.
if it is not 777,
in file manager click on the name of the upload folder (not the icon)
then at the right you will see change permissions, click it.
then click in each box for read, write and execute for all three columns,
then you will see 777 in the status box, click change.
hope this helps